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Joe Rocket RKT Speedmaster Carbon Helmet
- Ultra lightweight full application 4×4 carbon fiber weave shell
- Dual density, lightweight EPS impact absorbing liner
- Superior fit and comfort through advanced CAD specifications
- Optically-superior 3D Faceshield: Hard coated anti-fog coated shield, tool-free closure
- Quadport™ 2.0 ventilation system: 2 massive front intakes channeled through to an aerodynamic rear venturi-effect exhaust spoiler, pulling heat & humidity up and out
- Adjustable forehead & chin bar intake vents
- Removable Air-Guide for enhanced fog resistance
- Integrated aerodynamic rear spoiler
- Fully removable, washable & sublimated QwickDry™ interior
- Meets or exceeds both SNELL & D.O.T. standards
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Sizing Information
| Helmet Size | Hat Size | Head Measurement (inches) |
|---|---|---|
| XS | 6 5/8 to 6 3/4 | 21 1/4 to 21 5/8 |
| Small | 6 7/8 to 7 | 22 to 22 1/2 |
| Medium | 7 1/8 to 7 1/4 | 22 7/8 to 23 1/4 |
| Large | 7 3/8 to 7 1/2 | 23 5/8 to 24 |
| XL | 7 5/8 to 7 3/4 | 24 3/8 to 24 3/4 |
| XXL | 7 7/8 to 8 | 25 1/4 to 25 1/2 |
This sizing chart is based on information provided to us by Joe Rocket and is subject to change without notice, although we will do our very best to keep it up to date. We recommend that you measure your head by wrapping a cloth tape measure around your head about 1 inch above your eyebrows, which should be the largest portion of your head. Choose the helmet that is closest to your measured head size. If you fall between two sizes, choose the smaller of the two. You want a helmet to fit snug without being uncomfortable.
